Or rather, I am a terrible cartographer and this makes me hate mapping.
When I was younger, I used to spend hours creating intricate maps of both dungeons and wilderness areas -- and I had a lot of fun doing it. Nowadays, I don't enjoy it so much. I don't think it's because of time constraints, as I'm frankly blessed with a very flexible schedule that gives me a lot of free time to invest in creative efforts (like this blog).
Rather, I think it's because, as I got older, I started to realize I'm not an especially good mapmaker and that realization has made the whole process less enjoyable for me. When I say I'm not good, I don't just mean my technical skills, though that is part of it; I mean I'm not very imaginative when it comes to making maps. My own maps lack both flair and, where appropriate, plausibility. They just seem throw-together, which, of course, they frequently are.
That's why, more than the ability to draw, I wish I possessed the ability to make attractive and usable maps. You'd think, in this day of high technology, that there'd be software that'd let me do that easily without having to learn the ins and outs of a stripped-down CAD program. Alas, there isn't or, if there is, I don't know of its existence. And so many of my creative efforts get slowed down due to my inability to produce maps in a timely fashion. Goodness knows Dwimmermount is a little less ambitious than I'd like it to be, owing to my lack of enjoyment when it comes to cartography, which is ironic, given how important the players' mapping of the megadungeon has become to the development of the campaign.